Insertion for tobacco pipes



y 1940- r c. A. KLINGENSTIERNA 2.200.793

INSERTION FOR TOBACCO PIPES Filed Jan. 3, 1939 Patented May 14, 1940UNiTED' TATES PATENT OFFICE 22 19? mamas FOR ronlidco' men s" Clas AxelKlingenst ierna, Application really 3, 19i,.-s.;rstl\71 has: In SwedenFebruary 2, 1938 9 Claims Due to, the fact in tobacco pipes that theopen.- ing;.of the channel in.,the..pipe.stem lies asymmetrically in thebottom. of .thev bowl, the combustion of the tobaccoin the pipe bowlproceeds unevenly so that theglowing surface of the burning tobacco liesobliquely in. the ..bowl. The chief; object of this invention is toremov such draw back and to causethe.c'ombustionof the .tobaccototakeplace uniformly over the whole surfaceofthe burning tobacco. Thus, theglowing surfaceoi the tobacco will be parallel with aplane through theupperiree edge of the pipe bowl, and will not become oblique. I Another.object of this invention is to provide an insertion elementwhich willeffect an eflicient deposition and condensation of oil within theins'ertion and also on the bottom of the cavity in the .pipe bowl belowthe insertion. 1 A ...Another object of this invention is to create a.20 strong circulation of the smoke within the to bacco and in the cavityof the pipe bowl, so as to efiect an' efiicient air-drying of theinsertion device and of the saidlcavity in the pipe bowl both during thesmoking and thereafter. 25 Other objects of the invention will beevident from the following specification and claims.

One embodiment of an insertion in accordance with .this invention isshown in the annexed t. drawing-L 30 Fig. 1 shows an insertion device inaccordance with this invention, as developed in-a plane.

Fig, 2-shows a vertical section through a pipe bowl with the insertiondevicein its proper place. Fig. 3 shows a plan view of the insertiondevice 35 and the-pipe bowl shown in Fig. 2 Fig, 4 shows the insertionseparately, as seen from the right in Fig. 2 or 3. I V Fig. 5 is abottom view ofthe insertion device. Fig. l is on a smaller scale. Figs.2-5 are on 40 thesame, largerscale. V I M Referringnow to the drawing,it may first pe mentioned that the insert'device preferably made of oneintegral piece of sheet metal, a punched'tothe shape shown in Fig. l.fIfhus, 45 the insertion has a'central unbroken portion l,

which is to be' b ent to iforrn a cylinder or a trun .v

cate dcone. At the upper edg'e'thereoi a number of flaps or arms 2-8 areprovided, and one flap c? 5 is longer than the other flaps. At the lower50 end of the portion l there are three shorter flaps 9,10, H andbetween them interstices or recesses l2, l3.

The upper flaps 2, 4, 6, 8 are bent inwards to 55 form a bottom orcombustion grate having holes l4, l5, H5 at the remaining upright flapsor arms 3,5, I. Preferably, the arms ,3 and l-are bent to a concave,shape,, adapted,to the Wallof the cavity; inthepipe bowl, [1,, Alsothefiap 5 may be bent to aponcaveishape, thoughas a rule, this.181110.013 ,necessarywy1Thelflaps'9 and 10 are bent 5 slightlyinwardsioradapting them to the shape of the; concavity .in-,; the.pip e bowl. .Theflap II is bent; still more inwards andmay even be bent inwardssubstantially at right. angles with the v1 portion I, asshown ,FigStZand 5;; v.It is to be 10 observedgthat the=,-interst ice ,lZ-between theflaps 9 and !0;.is substantially rectangular, while in thejnterstice. L3theytwo .opp s te sides or ed arenot parallel but i'form. an angle witheach other ,In other words the flap [0 is bevelled on one side. When theinsertion is inserted ,;into the pipe bowl, the flap 5;,shouldbe;placed; next; to the. pipe stem... Preierablmbthe flapfivis,.bent.;round, the ppr..edge,ofathe pineglbowl; as-shown in, the.drawing In :thisposition of the insertiomthe interstices l justimfro'nt' ;of. ,the,channel in the pipestem and the-flaps, 9;:10are.=on.both'sid e s on this channel. Due to the: distribution of .the

draught thus ,efiectedand .thisdistribution issubstantially.afiectedi-by ,the-.flap 1l. l bent in: wards,. a neven:combustion across .the whole. upper surface of thetobacco is attained,,and simule taneouslyioilis. deposited on :the lower flaps 9, I0, e.

H and on the bottom..of-..the cavity ofthe'pipe bow-1.. Furthermoraeqa.goodtcirculation of the smoke/through the tobacco is. attained, and air.is, circulated for drying the insertion and the cavity of the pipebowl... ,1 3;

It mightbe. mentioned .that an even, uniform combustion is attained,even .if the insertion. is turned 180 from the positionshown..in.Figs.-..2. and3cso that thearm 5 is-diametricallyopposite to.thechanneL-in thexpipe stem. In this case, the condensation oioil issomewhat less, and the circulation of air..:for drying is not so strong.

...The flaps 3,1 5,1 conduct-theheatandithus efiect an inc reased dryingof the insertion. By means of. the arms 3, 5,11 the insertion isinserted into the pipe and removed therefrom. Due to their: concaveshap'ethearms 3, '5, 1 are more. rigid than they would be otherwiseand-for the same reason -the holes. l4, l5; l6 of the grate are bigger.It may be mentioned that it is not necesc sary tobend the arm 5 over-theupperedgeof the pipe bowl, but it mayi bebent down -toengagethe oppositewall of the pipe bowl; the arm 5 servingthen as a kind of spring pawlfor keeping the insertion in its place in the pipe. In such case, thehole IE will not be closed, but the arm 5 bent down protects that holefrom being obturated by tobacco flakes or the like. By bending the flaps2, 4, 6, 8 suitably, the combustion grate may be made plane, concave orconvex. Because the two edges of the portion I overlap at IS, theinsertion may adapt itself by spring action to pipe bowls havingdifferent inside diameters, and in such case the holes in the combustiongrate will remain substantially constant due to the width of the uprightflaps 3, 5, 1, independently of the reduction or increase of thediameter of'the portion I, within practical limits.

It may be mentioned that the flaps 9, l0, ll,

may be removed and that the cone may then be extended downwards and maybe provided with a small central hole in the bottom. 7,

. i 5 29$?" ble toarrange other small holes around a central bottomhole. The combustion grate may' consist of a round piece of perforatedsheetmetal 'or-the like, but the embodiment shown is preferred, bothwith regard to its manufacture and 'its action. It is essential that theflaps 9,. Ill and ll be correctly placed in relationto thelarge holesl4, l5, I6, for attaining a correct distribution of the draught, an evenand uniform combustion and a good deposition of oil. The condensation ofoil may be controlled by bending the flapll inwards to different angles.If this flap points vertically downwards, the condensation of oil has aminimum value; but nevertheless the combustion is even and. uniform.VVhe'n the flap H is bent at right angles to the portion I, the bestcondensing action is attained, including a very strong con densation ofoil on-the bottom of the-insertion, and a minimum of condensation on thebottom of the pipe bowl. This facilitates the cleansing very much. v I

What I claim is: v r I 1. In an insertion adapted :to be inserted into atobacco pipe bowl, a bottom having holes for carrying the tobacco andformingagrate, an

extension belowsaid bottom, saidextension being substantially circularin cross-section, and draught-distributing means the lowermost part ofsaid extension. l

2. In an insertion adapted to be inserted into I a tobacco pipe bowl, 'abottom having holes for carrying the tobacco and forming a grate, asub,- stantially cylindrical extension-below saidbottom, anddraught-distributing means in the lowermost partof said extension. a

.3. In an insertion for the bowl of a tobacco pipe, a perforated bottomfor-carrying the tobacco and forming a grate, an extension below.-

said bottom, said extension having. substantially the shape of atruncated cone, and draughtdistributing means at the lowermost part ofsaid extension.

v 4. In an insertion adapted to be insertedinto a tobacco pipe bowl,abottom having holes for supporting the tobacco and forming a grate, an

extension below said bottom, said extension being substantially circularin horizontal cross-section, and downwardly directed fiapsat the loweredge of said extension for directing the. draught.

5. In aninsertion for. the bowl of a tobacco pipe, a body piecesubstantially circular in horizontal cross-section, flaps at the upperend of said body bent. downwards to form a bottom having holes betweensaid flaps, .other upright flaps at the upper edge .of said body, andaircurrent distributing means at the lower end of said body. I

6. In an insertion adapted to be inserted into the bowl of a tobaccopipe, a sheet metal member in the form of a truncated cone out along ageneratrix and having overlapping edges, 2. plu- 7. In an insertionadapted to be inserted intothe bowl of a tobacco pipe, a sheetmetalmember in the formvof a truncated cone out along a generatrix and havingoverlapping edges, a pluralityof flaps at the upper edge of said sheetmemben'each alternate one of said flaps being bent inwards to form abottom for carrying the therethrough, each of the others of said flapsbeing upright and bent to a concave shape sub; stantially conforming totheinner surface of said pipe bowl, one of said upright flaps beinglonger than the others, and two flaps at the lower edge of said sheetmember spaced apart so as to leave an interstice at said lower edgevertically below said long upright flap. 8. In an insertion'adapted tobe inserted int the bowl of a tobacco pipe, a sheet metal member in theform of a truncated cone cutalong a generatrix and having overlappingedges, a

plurality of flaps at the upper end of said sheet member, each alternateone of said flaps being bent inwards toform a bottom having holes forcarrying the tobacco, while each of the. others of said flaps is uprightand bent to a. concave shape substantially conforming to the shape ofthe inner surface of said pipe bowl, and one .of

two flaps at the lower edge of Said sheet member and spaced apart so asto leave an interstice at said lower edge vertically below said longupright flap, and an additional flap at said lower 201 tobacco, saidbottom being provided with holes 40. said upright flaps being longerthan the,others,

edge of the cone, said additional flap being bent inwards substantiallyat right angles to the outer surface of said sheet member.

9. In an insertion adapted to be inserted into the bowl of a tobaccopipe, a sheet metal member in the form of a truncated cone out along ageneratrix and having overlapping edges, a plurality of flaps at theupper end of said sheet member, each alternate one of said flaps beingbent inwards to form a bottom having holes'for carrying the tobacco,while each of the others,

of said flaps is upright and bent to a concave shape substantiallyconforming to the shape of the inner side of said pipe bowl, and one ofsaid upright flaps being longer than the others, two flaps at the loweredge of said sheet member spaced apart and leaving an interstice at saidlower edge vertically belowsaid long upright flap, and anadditional flapat said lower edge of the sheet member between saidtwo fiaps, saidadditional flap being bent inwards substantially at right angles to thesurface of said sheet memher, the edges of said two flaps at the loweredge of, said cone which are next to said additional flap beingbevelled.

CLAES AXEL KLINGENSTIERNA.

